Lessons 2.2 and 2.3 Adding and Subtracting Real Numbers

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Presentation transcript:

Lessons 2.2 and 2.3 Adding and Subtracting Real Numbers

3-ways to think of it… Number Line Rules Algebra Tiles

Adding Real Numbers Examples: Number Line:

Adding Real Numbers Examples: Algebra Tiles:

Adding Real Numbers Examples: Rules: Adding two numbers with the SAME signs… Add the two numbers together (without paying attention to the signs), then the sum has the same sign as the sign of the numbers added. Adding two numbers with DIFFERENT signs… Find the difference of the numbers (without paying attention to the signs), then the sum has the same sign as the larger number.

Adding Real Numbers… You Try!

Adding Multiple Real Numbers…

Pizzazz with Adding Worksheet!

Subtracting Real Numbers Good News… Subtracting just means add the opposite Example: 14 – 8 = 14 + (-8) So… -3 – 5 = -3 + (-5) And 13 – 16 = 13 + (-16) And -9 – (-4) = -9 + (+4)

Number Line You can also think about the number line when subtracting…

Subtracting Real Numbers You try!!!

Subtracting Real Numbers You try!!!

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Worksheet with Adding AND Subtracting!

Adding AND Subtracting - Decimals You try!!!

Adding AND Subtracting – Fractions! You try!!!

Half-Sheet with Adding and Subtracting Fractions and Decimals!